Manage to change 3.5mm plug on the headphone side to 3.5mm socket.
I'm using this socket.
Here is the result.
Not the easiest MOD, need some time to cut and grind.
Need to sand down the socket to make it smaller and trim some rubber off in the headphone.
Very please with the outcome :thumbup:

Amazing mod. Had something in mind like this. Would you mind sharing the link where to buy that socket?